Another bitterly cold night is in store, especially where snow cover is deepest in northern Illinois, with lows forecast in the teens below zero. Elsewhere, it will be in the single digits above and below zero. Light winds under high pressure are expected to keep wind chill values in check somewhat, though continue to dress for the cold and cover extremities if spending time outdoors. Looking ahead to Saturday, another fast moving system looks to bring a period of light snow Saturday afternoon into Saturday evening for at least portions of the area, which could cause slick roads again. Finally, we continue to watch Sunday night into Monday for potentially significant snow north of I-80. Brutally cold temperatures and wind chills will be the rule next week across northern Illinois and northwest Indiana.